The success of Guitar Hero appears to be replaying on Facebook, with a game called Instant Jam. The title picked up almost a million monthly active users on this week's AppData list of fastest-growing Facebook games by monthly active users. However, the game may be headed for a popstar-like 15 seconds of success. Keep reading for more below the list:

Instant Jam is a solid enough game, as we found in the review. However, only a tiny minority of the new users are returning. A quick look at the game's DAU / MAU graph, which shows how many of a game's MAU return as daily active users, reveals a brief rise as its initial growth spurt hit, then a precipitous fall. There are likely several problems, including insufficient viral hooks and technical problems in syncing with user's music libraries.

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